21213101122301 has 4 divisors (see below), whose sum is σ = 23141564860704. Its totient is φ = 19284637383900.

The previous prime is 21213101122289. The next prime is 21213101122307. The reversal of 21213101122301 is 10322110131212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21213101122301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213101122307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964231869185 + ... + 964231869206.

It is an arithmetic number, because the mean of its divisors is an integer number (5785391215176).

Almost surely, 2^{21213101122301} is an apocalyptic number.

It is an amenable number.

21213101122301 is a deficient number, since it is larger than the sum of its proper divisors (1928463738403).

21213101122301 is a wasteful number, since it uses less digits than its factorization.

21213101122301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928463738402.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21213101122301 its reverse (10322110131212), we get a palindrome (31535211253513).

The spelling of 21213101122301 in words is "twenty-one trillion, two hundred thirteen billion, one hundred one million, one hundred twenty-two thousand, three hundred one".